Q_XQUOTAON(2const)                                          Q_XQUOTAON(2const)

NAME
       Q_XQUOTAON - turn on quotas for an XFS filesystem

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <xfs/xqm.h>      /* See quotactl(2) */
       #include <sys/quota.h>

       int quotactl(QCMD(Q_XQUOTAON, type), const char *_Nullable special, 0,
                    caddr_t addr);

       #include <xfs/xqm.h>      /* See quotactl_fd(2) */
       #include <sys/syscall.h>  /* Definition of SYS_* constants */
       #include <unistd.h>

       int syscall(SYS_quotactl_fd, int fd, QCMD(Q_XQUOTAON, type), 0,
                   unsigned int *addr);

DESCRIPTION
       Turn on quotas for an XFS filesystem.

       XFS provides the ability to turn on/off quota limit enforcement with
       quota accounting.  Therefore, XFS expects addr to be a pointer to an
       unsigned int that contains a bitwise combination of the following flags
       (defined in <xfs/xqm.h>):

           XFS_QUOTA_UDQ_ACCT  /* User quota accounting */
           XFS_QUOTA_UDQ_ENFD  /* User quota limits enforcement */
           XFS_QUOTA_GDQ_ACCT  /* Group quota accounting */
           XFS_QUOTA_GDQ_ENFD  /* Group quota limits enforcement */
           XFS_QUOTA_PDQ_ACCT  /* Project quota accounting */
           XFS_QUOTA_PDQ_ENFD  /* Project quota limits enforcement */

       This operation requires privilege (CAP_SYS_ADMIN).

RETURN VALUE
       See quotactl(2).

ERRORS
       See quotactl(2).

STANDARDS
       Linux.

HISTORY
       Linux.

SEE ALSO
       quotactl(2), quotactl_fd(2), Q_XQUOTAOFF(2const)

Linux man-pages 6.19              2026-06-05                Q_XQUOTAON(2const)